Rock-drill.



'Pmned oct. 23, i900.4

0.-; YOUNG.

ROCK DRILL. (Appligaeion me nu, afigom (No Model.)

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No. 660,409.. Patented oct. 23, |900.`

c. E. YOUNG.

REK DRILL'.

(Application filed Mm'. B, 1900.)

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No. 660,409. Patented oet.. 23,1900.

' c. E. YOUNG.

ROCK. DRILL. l

(Applicgtion led Mar. 8. 1900.) l m" mdel') Y 3 shgen-sheet 3.

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UNITED STATES 4-Phrnivr OFFICE..

CHARLES n. YOUNG, on FREMONT, WASHINGTON.

ROOK- DRILL.

SPGFICATION forming part of Letters :Patent` No. 660,409, dated October 23, 1900. Application filed March 8, 1900.v Serial No. 7,861. (No model.)

To @ZZ whom, it may concern:

Be it known that I, CHARLES E. YOUNG, a citizen of the United States, residing at Fremont,in the county of King and State of Washington, have invented new and useful Improveinents in Rock-Drills, Of which the following is a specification.

My invention relates to improvements in rock-drills; and it consistsin the peculiarand advantageous construction, certain novel combinations, and the adapt-ationA of parts hereinafter described, and-particularly pointed out in the claims appended.

In the accompanying drawings, Figure lis a View, partly in longitudinal section and partly in side elevation, of my improved drill. Figs. 2 and dare transverse sections taken in the planes indicated by the broken lines 2 2 and 3 3, respectively, Ot' Fig. l. Fig. 4 is a side elevation of the drill with some of the elements partly broken away. Fig. 5 is a broken plan View. Fig. 6 is a detail broken perspective view illustrating the rectangular frame at the forwardend of the drill-carriage andthe parts adjacent thereto. Figs. '7, 8, and 9 are detail sections taken in the planes indicated by the broken lines 7 7, 8 8, and f) 9, respectively, of Fig. 4. Fig. 10 is a perspective View of one of the guide-pieces forming part Ot' the drill-rod holder. Fig. l1 is a perspective view of the outer end of the brace Or strut. Fig. l2 is a side elevation of a modified form of angle-lever.

The drawings show my improved drill asarranged in a horizontal position; but I desire it distinctly understood that the drill may be arranged vertically, horizontally, or at various angles of inclination, as theconditions ma-y require.

Referring by letter to the said drawings, A is the main support of the drill, which is preferably equipped with one or more adjustable and pointed screws a, at one end adapted to engage uneven surfaces and to hold it in its operative position and is also provided at its opposite end with parallel arms o, and B is the brace Of said support. This brace comprises an outer section c, which terminates in a fork d, and an inner sleeve-section e, which receives the section c in a telescopic manner and is provided with a set-screw f for engaging the section c, whereby it will be seen that Y the brace may be readily increased Or dimin ished in length, as occasion demands; brace-section e is equipped aty its Vinner end with a disk g, which is provided with a plu`V rality of apertures??J and is interposedbe- The tween and pivotally connected to the arms b Vof the su pport A and is designed,to be adjust# ably fixed to said-arms by a removable pin z',

extending through coincident apertures in `the arms and an aperture h ofthe disk, whereby it will beseen that the brace B may be fixed at various angles of inclination to theI support A, and said support may be held inY ward end of the harm; loops n, which receivel the support A and have apertured lugs p, de-4 signed t'o be arranged coincident with similar lugs q q on the portions l of collar j and the portionsfm..2 of framem, and longitudinal rods r, which areremovably arranged in the lugsp q of the portions lm2 and the loopsn and serve to connect the same.

As will be readily observed, when one ot' the rods r is removed the upper portion of the carriage C-that is, the collars j k, the

bar fm, and the frame m', together with the d rill-rod holder mou nted therein-1n ay be easily swung to one side, so as to carry the drill-A rod out ot' the way and permit of the expeditious removal of cuttings from the hole that is being drilled.

The drill-rod holder in the preferred embodiment of the invention comprises a tubular section D, journaled in the collars'j k of the carriage and having flanges s at its ends, whereby'itis held against endwise movement, an endwise-movable section E, arranged to telescope in the secti'onD and having feathers t,'1novable in slots ain said section D, whereby it is held against rotation with respect thereto, anda coiled spring G, which ICO surrounds the section E and is interposed between a collar fn thereon and the rear end of section D. wherebyit is enabled to return the section E to its normal position subsequent to a blow on the drill-rod. The endwise-movable section E is provided adjacent to its rear end with a collar-Hanne tu, having apertured lugs at opposite points, and is also provided at its rear end with diametrically-opposite longitudinal slots y. (See Fig. 7.) This slotted portion of the section E is surrounded by a loose collar G, which has. diametrically-opposite offsets e, and is held on said section E bythe guide-pieces H, as best shown in Figs.`

I is the drill-rod, which is of the ordinary type employedA by miners, with the exception that it is provided adjacent to its rear end with a tixed collar d@ having lateral arms e arranged in the slot-s y ot' the holder-section E and the slots b of the guide-pieces H after the manner best shown in Fig. 7, and J (see Fig. 2) is the forward'gnide of the drill-rod. This forward guide is made up of a xed member j", connected to the rectangular frame on' and provided with a recess g' and a slot 71, and a movable member 1j', connected in a pivotal mannerto the fixed member and recessed at t2. The said movable member is provided with a bearing-box j' to receive a fastener K, which has a lateral arm k at its lower end designed to take into the slot h' of the memberf' and extends upwardly through a slot l in the upper cross-bar of the frame m and is provided at its upper end with a handle n@ When the said fastener is rocked in its bearingj', so as to swing its arm 7c out of the slot h' of the iixed member f', the Inovable member t" of the guide J may be drawn upwardly through the medium of the fastener, so as to release the drill-rod.

By reason of the construction just described it will be seen th-at to remove the drill-rod it is simply necessary to open the forward guide J after the manner stated and turn the collar G on section E until its slotted osets ,e are coincident with the slotted arms c of the guide-pieces H, when the drill-rod may be readily withdrawn from the holder. It will also be observed that with the forward guide J open and the collar Gin the position stated the drill-rod may be as readily replaced in the holder and by simply turning the collar G may be secured in its operative position. It will be further observed that by Virtue of the provision of the slots y in the holder-section E and the lateral arms e' on the drill-rod I said rod is compelled to turn with the holder-section and yet has a limited endwise movement with respect to the same. The

capability of the drillrod to move endwise with respect tothe.holder-section E and the remainder of the machine is highly advantageous, inasmuch as it. prevents the transmission oi shock and jar to the machine when the rod is struck with a sledire, and thereby materially prolongs the usefulness of the machine.

L is an annular ratchet tlxed on the section D of the drill-rod holder.

M is a transverse rock-shaft journaled in the frame fm. N is a coiled springenrrounding said shaft and having one end connected thereto and its opposite end connected to the frame m', and P Pl are angular levers fixed at the apices ot' their angles on the ends of the shaft M, as best shown in Figs. 2 and 4t of the drawings. The depending arms of these levers are connected by rods Q with the collar w on the section E of the drill-rod holder, while the other arm of the levell P is provided with a pawl R (preferablyasprinepressed one) to engage the ratchet L and is `designed to be connected by a cord S with a pedallever T. The cord may be increased or diminished in length, and 'hence the pedallever may be arranged ,in the position most convenient for the operator.

, In practice my improved drill is xefl in a vertical, horizontal, or inclined position, as desired, through the medium of the screwpoints ct and the strut orbrace and is operated as follows: The pedal-lever T is rst depressed so as to move the section E of the drill-rod holder forwardly and carry the point of the drill-rod to the surface t0 be drilled and at the Sallie time partially turn the drillrod holder and the drill. When the point ot' the drill-rod engages the rock or other substance to be drilled, the arms e of said rod are moved back to the collar G, as shown in Fig. 4c, so that when the rod is subsequently struck with a Sledge it is free from the holder and remainder of the machine, and hence no shock or jar is imposed on the holder or other parts of the drill. When pressure is removed from the pedal-lever T, the spring F operates Vto return the section E ofthe drill-rod holder, the drill-rod, and the levers l? I to thelifirst. positions. In the event ot' the drill-rod sticking in the hole that is being drilled the spring N, which is compressed by the depression of the pedal-lever and the rocking: of the levers P P' and shaft M in the direction indicated by the arrow, tends to expand, and thereby rocks the shaft M and levers P P' in the direction opposite to that indicated by the arrow, the slots in the rods q permitting of such movement of the levers independent of the section E of the holder. pressing the pedal-lever'I one or more times the operator is enabled through the lever P, pawl R, and ratchet L to partially turn the drill-rod holder and drill-rod and thereby readily free the latter, when the ordinary operation of the drill may be resumed.

V is a dog, which is connected to the frame Then by simply de-' IOO m and arranged to engage the `ratchet L in such manner as to hold the drill-rod holder against retrograde rotary movement.

Y The carrier C is adjustably fixed on the support A by a set-screw W and may therefore be moved forward or backward on the support, as occasion demands.

It will be readily appreciated from the foregoing that my improved drill is simple, compact, and strong and that by virtue of the operator being enabled to turn the drill-rod with his foot both of his hands are left free to wield the Sledge used in driving the drillrod, which is an important advantage.

I have entered into a specific description of the construction and relative arrangement of the parts embraced in the present embodiment of my invention in order to impart a full, clear, and exact understanding of the same. I do not desire, however, to be understood as confining myself to such specific construction and arrangement of part-s, as such changes or modifications may be. made in practice as fairly fall within the scope of my claims.

When desirable, an angle-lever P2, such as shown in Fig. 12, may be employed in lieu of the lever P. Said lever P2 is designed to be fnlcrumed at the apex of its angle on one end of shaft M and have its depending arm connected to-oue rod Q. It also has its` rearwardly-extending arm equipped with a pawl R and provided with lateral and curvilinear apertured-branches a7. On this rearwardlyextending arm of the lever P2 is fulcrumed a lever as, which is connected at one end to the cord S, leading to the pedal-lever, and Ahas its opposite end adjustably connected by a removable pin a9 to one ot' the apertured branches a7 of the angle-leven, By virtue of this it will be observed that the lever as may be set at various angles to the rearwardlyextending arm of the angle-lever P2, so as to enable the depression of the pedal-lever to rock said angle-lever when the machine is being used in an upright or approximatelyupright position.

Having thus described my invention, wha I claim is l. In a rqck-drill, the combination of a suitable support, a drill-rod holder mounted on the support and movable endwise with respect theret-o,a spring interposed between the holder and support for cushioning the forward movement of the former and returning it to its normal position subsequent to such movement, and a drill-rod arranged in the holder and having a limited endwise movement with respect thereto, whereby it is enabled to move endwise in t-he holder precedent to the movement of said holder against the tension of the spring, substantially as set forth.

2. In a rock-drill, the combination of a suitable support, a rotatable and endwise-movable drill-rod holder, a spring interposed between the holder and support, and a drill-rod 3. In a rock-drill, the combination with a rotatable drill-rod holder comprising a tubular section held against endwise movement,

. an endwise-movable tubularsection arranged in and connected to the first-named section so as to turn therewith and move endwise with respect thereto and having longitudinal slots; and a coiled spring surrounding the endwise-movable section and interposed between an abutment thereon and the firstnamed section; of a drill-rod arranged in the holder and having lateral arms arranged in the slots in the endwisemovable section thereof, substantially as specified.

4. In a rock-drill, the combination with a rotatable drill-rod holder comprising a tubular section held against endwise movement,

' an endwise-movable tubular section arranged in and connected to the first-named sectionl slots, slotted guide-pieces connected to said` endwise-movable section of the holder and having in wardly-directed and recessed arms at-their inner ends-and outwardly-directedyl arms at their outer ends, and a collar loosely mounted on said endwise-movable section and having offsets; of a drill-rod arranged in the holder and having lateral arms arranged in the slots in the endwise-movable section thereof and also in the slots of the guidepieces, substantially as specified.

5. In a rock-drill, the combination with a rotatable drill-rod holder comprising a tubular section held against endwise movement, au endwise-movable tubular section arranged in and connected to the first-named section so as to turn therewith and move endwise with respect thereto and having longitudinal slots, slotted guide-pieces connected to said endwise-movable section of the holder and having in wardly-directed and recessed arms at their inner ends and outwardly-directed arms at their outer ends, a collar loosely mounted on said endwise-movable section and having offsets, a guide arranged in advance of the drill-rod holder and comprising a tXed section, a pivoted section and means for securing the pivoted section; of a drill-rod arranged in the holder and the guide in advance lOC the frame and having an angular arm adapted to enter the slot of the fixed member; and an endwise-movable drill-rod held in the holder and extending through the guide, substantially as specified.

7. In a rock-drill, the combination of a horizontal bar, a carriage comprising one or more inner portions mounted on the bar and' having lugs at their opposite sides, provided with apertures'disposed in the direction of the length of the bar, an outer portion having corresponding apertured lugs at its opposite sides, and removable longitudinal rods eX- tending through the apertured lugs of the inner and outer portions at opposite sides of. the bar so as to hold the outer portion against swinging on the inner portion, and a drillrod holder arranged in the outer portion of the carriage, substantially as specified.

S. In a rock-drill, the combination of a rotatable drill-rod holder comprising a section held against endwise movement and provided with a ratchet, a sectionV connected with the first-named section so as to turn therewith and move endwise with respect thereto, and a spring interposed between the two sections, a drill-rod movable with the endwise-movable section of the holder, a lever, a pawl carried by the lever and adapted to engage the ratchet of the drill-rod holder, a rod connecting the lever and the endwise-movable section of the drill-rod holder and suitable means for operating the lever, substantially as specified.

9. In a rock-drill, the combination of a rotatable drill-rod holder comprising a section held against endwise movement and provided with a ratchet, a section connected with the first-named section so as to turn therewith and move endwise with respect thereto, and a spring interposed between the two sections, a drill-rod movable with the endwise-movable section of the holder, a lever, a pawl carried by the lever and-adapted to engage the ratchet of the drill-rod holder, a rod connected to the endwisemovable section of the drill -'rod holder and loosely connected to the lever, a spring for moving the lever independent of the endwise-movable section of the holder,and suitable means for rocking the lever, substantially as specified.

l0. In a rock-drill, the combination of a suitable support, a rotatable drill-rod holder arranged in the first-named section so as to turn therewith and move eudwise with respect thereto, a coiled spring surrounding the endwise-movable section and interposed between the two sections, a drill-rod arranged in the holder, a frame fixed on the support, a rock-shaft journaled in said frame, a `coiled spring surrounding said shaft and connected at one end thereto and at its opposite end to the frame, a lever fixed on said shaft, a rod loosely connected to the lever and interposed between the same and the endwise-movable section of the holder, a pawl carried by the lever and arranged to engage the ratchet of the holder, and a pedal-lever connected with the vsaid lever, substantially as specified.

1l. In a rock-drill, the combination of a rotatable drill-rod holder comprising a section held against endwisemovement and provided with a ratchet, a section connected with the first-named section so as to turn therewith and move endwise with respect thereto, and a spring interposed between the two sections, a

`the angle-lever, and means connected to said adj ustably-connected lever for rocking the angle-lever, substantially as specified.

l2. In a rock-drill, the combination of a rotatable drill-rod holder provided with a ratchet, the rock-shaft M, the spring N, a lever fixed on the rock-shaft equipped with a pawl for engaging the ratchet and having lateral, apertured branches, a second leverfnlcrumed on the first-named lever and adjustably1 connected by means of a removable pinto one of the apertured branches thereof; said second lever being adapted to be connected toa pedal-lever, substantially as specified.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. l

CHARLES E. YOUNG.

Witnesses:

H. R. CARR, EDGAR BRYAN. 

